Hutton. — On New Zealand Land Shells. 173 



Central tooth rather wedge-shaped, broader behind, the length nearly 

 twice the breadth ; the reflexed portion triangular, slightly sinuated at the 

 sides, less than half the length of the base, with a moderate point. Laterals 

 with the base rhomboidal ; the inner with the reflexed portion half the 

 length of the base, bicuspid, the inner cusp large with a moderate point, 

 the outer cusp small without a point ; outer laterals with the reflexed por- 

 tion shorter and unicuspid, the point longer, reaching beyond the posterior 

 margin of the base. Marginals aculeate, with a strong curved point, which 

 is most developed in the centre of the marginals. 



Hab. Greymouth (K. Helms). 



This species differs from Zonites in having a ribbed jaw, in which respect 

 it resembles Zonites (?) lansingi, Bland, from Oregon. , 



Phacussa fulminata, Hutton. PI. x., fig. J. 



Jaw like that of P. helmsi. 



Dentition, 38-1-38. Laterals about 18. 



Central tooth rectangular, the length nearly three times the breadth ; 

 the reflexed portion small, about a third of the length, constricted on the 

 sides, the point small. Laterals bicuspid, the inner cusp much larger : 

 inner laterals with the inner side emarginate, the cutting point small ; outer 

 laterals with the reflexed portion more oblique and its inner margin 

 straight, the cutting point moderate. Marginals aculeate, with a long 

 curved point. 



Hab. Stewart Island (T. Kirk). 



Janella bitentaculata, Quoy. PI. x., fig. m. 



Jaw delicate, smooth, broad, slightly arched, with a sub-quadrangular 

 accessory plate proceeding backwards. 



Dentition, 255-1-255. 



Central tooth with a median cusp on the reflexed portion ; the anterior 

 margin simple or sinuated. 



Hab. Christchurch (E. W. Fereday). 



Janella marmorea, Hutton. PL x., fig. n, and pi. xi., fig. x. 



Jaw like that of J. bitentaculata. 



Dentition, 255-1-255. 



Central tooth without a median cusp on the reflexed portion ; the 

 anterior margin emarginate. 



Hab. Greymouth (E. Helms). 



Leptopoma pannosa, Hutton. PI. x., fig. u. 



Dentition, 3-1-3. 



Central tooth longer than broad, constricted in the middle, rounded in 

 front, and flat behind; anterior margin with five denticles, none on the 

 basal part of the tooth. First lateral broad, with a very short stalk ; 



